Synthesis and pseudo-capacitance of chemically-prepared polypyrrole powder

Noh, Kun Ae; Kim, Dong-Won; Jin, Chang-Soo; Shin, Kyoung-Hee; Kim, Jong Huy; Ko, Jang Myoun

doi:10.1016/s0378-7753(03)00813-9

Cited by 78 publications

(31 citation statements)

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“…Polypyrrole ͑PPy͒, as a kind of conducting polymer, has advantageous properties with respect to low cost, high conductivity, and high doping/ dedoping rate during charge/discharge. [10][11][12][13][14][15] However, it exhibits the disadvantage of a low cycle life because swelling and shrinkage may occur during doping/dedoping processes, thus leading to mechanical degradation of the electrodes and fading of electrochemical performance. 16,17 A combination of manganese oxide and conducting polymer appears interesting for supercapacitor electrodes.…”

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confidence: 99%

Synthesis of Polypyrrole-Intercalated Layered Manganese Oxide Nanocomposite by a Delamination∕Reassembling Method and Its Electrochemical Capacitance Performance

Zhang

Yang

2009

Electrochem. Solid-State Lett.

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A polypyrrole-intercalated layered manganese oxide nanocomposite ͑PPy-MnO 2 ͒ has been synthesized by a delamination/ reassembling process. X-ray diffraction analysis shows that the basal spacing of the PPy-MnO 2 nanocomposite is 1.38 nm. The room-temperature conductivity of the PPy-MnO 2 nanocomposite is found to be 1.3 ϫ 10 −1 S/cm, which is 4-5 orders of magnitude higher than that of the pristine manganese oxide ͑6.1 ϫ 10 −6 S/cm͒. The improved specific capacitance of the PPy-MnO 2 nanocomposite ͑290 F/g͒ compared with that of the pristine manganese oxide ͑221 F/g͒ is attributed to a combination of the conductivity effect and the high specific capacitance of PPy. © 2009 The Electrochemical Society. ͓DOI: 10.1149/1.3082015͔ All rights reserved.Manuscript submitted September 29, 2008; revised manuscript received January 15, 2009. Published February 17, 2009 Electrochemical capacitors ͑or supercapacitors͒ are chargestorage devices which possess high power density, excellent reversibility, and long cycle life compared with batteries.1-4 Depending on their charge-storage mechanism, electrochemical capacitors are divided into electric double-layer capacitors ͑EDLCs͒ and pseudocapacitors. The energy-storage mechanism of EDLCs relies on the separation of charges at the interface between an electrode and an electrolyte. Various carbonaceous materials ranging from amorphous carbons to carbon nanotubes have been used as electrode materials in EDLCs.2 In the case of pseudocapacitors, a faradaic process occurs in addition to a simple charge separation. Numerous metal oxides and conducting polymers have demonstrated qualifications as electrode materials for pseudocapacitors. Among these materials, hydrated ruthenium oxide exhibits remarkably high specific capacitance, as high as 1300 F/g, and excellent reversibility. 5,6 However, the high cost and the toxicity to the environment have limited its wide application. Therefore, much research interest has focused on other transition metal oxides. In this respect, manganese oxide is one of the most attractive candidates for electrochemical capacitor electrode materials because of its environmental friendliness and low cost.7-9 However, manganese oxide exhibits inferior specific capacitance and electrical conductivity to ruthenium oxide. Polypyrrole ͑PPy͒, as a kind of conducting polymer, has advantageous properties with respect to low cost, high conductivity, and high doping/ dedoping rate during charge/discharge. [10][11][12][13][14][15] However, it exhibits the disadvantage of a low cycle life because swelling and shrinkage may occur during doping/dedoping processes, thus leading to mechanical degradation of the electrodes and fading of electrochemical performance. 16,17 A combination of manganese oxide and conducting polymer appears interesting for supercapacitor electrodes. The resulting composite is expected to possess synergic properties from both components, such as enhancement in electrical conductivity or electrochemical cycling stability. Recently, Sivakkumar et al. pr...

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confidence: 99%

Synthesis of Polypyrrole-Intercalated Layered Manganese Oxide Nanocomposite by a Delamination∕Reassembling Method and Its Electrochemical Capacitance Performance

Zhang

Yang

2009

Electrochem. Solid-State Lett.

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“…The working electrode was composed of 80 wt% active material, 10 wt% acetylene black as a conductive carbon and 10 wt% polyvinylidene difluoride as a binder. In the present work, the conductive carbon was added to ensure the conductivity, as demonstrated in previous works, 41 in order to study the electrochemical properties. These materials were mixed with a small amount of N-methylpyrrolidone as the dispersion medium.…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

Phase separation of composite materials through simultaneous polymerization and crystallization

2017

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Composite materials have attracted much interest because of the emergent properties originating from the components. A variety of methods have been studied to control the morphology of composites based on noncrystalline polymers and crystalline materials. However, it is not easy to control complex morphologies, such as segregated sea-island structures, on the submicrometer scale. Polymerization induces crystallization, because supersaturation, which is required for crystallization, is achieved by the consumption of the monomer. Here we report a phase-separation approach based on simultaneous polymerization and crystallization as a new method for the morphological control of composite materials. Segregated polymer and organic crystal domains are obtained by polymerization of an organic monomer solution accompanied by simultaneous crystallization. The phase separation induced the generation of composite materials consisting of a redox-active quinone crystal and conductive polymer with a segregated structure on the submicrometer scale. The segregated composite of 2,3-dichloro-1,4-naphthoquinone and polypyrrole showed enhanced charge-storage properties based on the smooth redox reaction. The present phase-separation approach can be applied to a variety of functional segregated composite materials consisting of crystalline and polymer materials.

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“…Another promising electrode material for supercapacitor application is conducting polymers. Because of their unique properties such as high specific capacitance, involvement of whole polymer mass in the charging process, high conductivity in the doped state and fast charge/discharge electron transfer kinetics, many researchers have been involved in the development of supercapacitors using various conducting polymer based electrode materials [4][5][6][7][8][9]. Among the conducting polymers, polyaniline has been of much interest for supercapacitor application, due to its environmental stability and high electrical conductivity [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a Novel Polymer Nanohybrid Electrode Material PANI-BaMnO3 for High Power Supercapacitor Application

Shanmugavadivel¹,

Dhayabaran²,

Subramanian³

2017

Port. Electrochim. Acta

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The electro active inorganic-organic nanohybrid material Polyaniline-BaMnO3 has been synthesized by the surfactant assisted chemical polymerization reaction of aniline with nanocrystalline BaMnO3. Electrochemical studies have been performed using cyclic voltammetry and galvanostatic charge-discharge measurements.The enhanced electrode performance originates from the synergistic effect of PANI and BaMnO3. The hybrid delivers very high specific capacitance of 560.5 Fg -1 , energy density of 32.01 whkg -1 and power density of 400 wkg -1 , respectively. The hybrid also exhibits very high stability and excellent cycling performance with less than 5% capacity loss over 500 cycles.

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Synthesis and pseudo-capacitance of chemically-prepared polypyrrole powder

Cited by 78 publications

References 10 publications

Synthesis of Polypyrrole-Intercalated Layered Manganese Oxide Nanocomposite by a Delamination∕Reassembling Method and Its Electrochemical Capacitance Performance

Synthesis of Polypyrrole-Intercalated Layered Manganese Oxide Nanocomposite by a Delamination∕Reassembling Method and Its Electrochemical Capacitance Performance

Phase separation of composite materials through simultaneous polymerization and crystallization

Fabrication of a Novel Polymer Nanohybrid Electrode Material PANI-BaMnO3 for High Power Supercapacitor Application

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